Valve grinder



Jan. 27, 1931. J. ORAWIEC ,7 ,0

VALVE GRINDER Original Filed Feb. 6, 1928 3 Sheets-Sheet 1 Inwemar Q/J/Y Oran/A20 Attornqy Jan. 27, 1931. J. ORAWIEC VALVE GRINDER Original Filed Feb. 6, 1928 :5 Shaw's-Sheet 2 w m. w .m. c w W m 0 /7.6 W 4,3? WM Wm 1 a 9. a w a 7 7 0 "A4, 6 5 0 5 2 Z a L Jan. 1931. J. ORAWIEC 1,790,071

' VALV GRINDER Original Filed Feb. 6, 1928 3 -Sheets-Shee t 3 Attornqy Inwentar' I 3 (707/7 arm wise Patented Jan.'27, 1931 V I o i p V UNITED sr TE-s PATENT; QEFICE' 3; I i

A I V J QIB I Il' onewincior on ciieo, rnniivorspi M l I V v LyE GRIND-nit Application filed February}, 1928 SerialNo. 2291; R'e'newed August 25, 193i).

Thepresent invention relates to improve like reference characters indicate correspond-V mentsin valve grinders and: has reference ing' partsthroughoutthe several views more particularlyrto an improvement over Figure ;1 is a side elevation of the valve the valve grinding tool embodied in my prior grinder embodying my invention, a portion Patent, #l,59l,400, granted July 6, 1926. ofthe knob being shown in section to more 'One of-the important objectsof the presclearly illustrate its connection with the ent invention is to provide a valve grinder Spindle that is secured 'at it's lower end of" which is of such construction as to permit the the twisted shaft, 7 v v 1 same to be efiiciently used in instances where I Figure 2 is an enlargedsectional view I the usual valve grinder'is inaccessible, such through the sectional outer' casing ofthe as for example when 'attemptingto grind the slida le hand gripshowing the mountingfor valve in the last cylinder that is located bethe slianlrengaging rollers. .7 'neath or directly adjacent the dash board Figure Sis a transverse section taken subof certain types of vehicles. stantially on the line 33 of Figure2.

. 15 3 r A further object of the invention is to pro: I V Figure 4' is an enlarged detail view or the vide a valve grinder wherein the same invalve engaging unit, parts beingshown in eludes a reversely twisted shaft with which section, y cooperates a slidable hand grip to effect the Figure 5 is a fragmentary detail perspecoscillatory movement of the shaft during the rive view of the upper portion or head of go 'use of the tool whereby the valve will be} the cylinder block engaging tripod, the

. p sleeve beingremove d. V p 7. Another importantrobject of the invention Figure .6 is aside elevation of ythe valve is to provide an improved valve engaging engaging means, the samejbeing'shown for unitthat includes a-Ineans whereby-the tool use in conjunction with theitype of valves:

5 can be eifectivelyand eiiiciently-usedregardthat are formed With spa d Sl S 0r Wl 1 less ofthe type of valvethat is to be ground, I ders in their upper faces: i

means beingprovided for permitting the use *F'gure 7 is an elevational view of the valve of the tool whereqt-he valve is formed with grind r sh ng i i n l, Uni -R the usual slot'in' the upper face of the head ciated therewith when the valve grinder is properly ground, I y

3 thereof, as well as where the 'spaced 'pin -used in grinding the rearmostvvalveon cerf holes are formed in theupp'er face of the taintypes of vehicles.

7 head of the valve, Figure'Bisa detailjofthe detachable unit,

A still further object of the invention re- 3 parts being-shown in section.

sides in the 1 provision of a valve grinder g re 13 a p ll j "1 W i h- 35 -wherein the parts comprising the same may board engaging thafi p a s W 35 l be readily and easily assembled or disassein th h h h in Fi hhh and l P bled, and due to its construction, considere -ls l P P QUY OI able time and labor willbe saved in grinding the hhhrledlslheve'i t I valves of internal combustion engines. Ih the dmwlhgswherelh the Phlposh.

A further Object is to Provide a valve of m the r f r? in 1 rinder of the above mentioned character bocilmenh my .mvhntlon"the P t 1 i b l designates a fiatiiron shaft'that isadapted Whlch 1S slmple 1h constmctloh h h for vertical disposition when in use This r g and l and f h f t adapt" shaft is twisted throughout its entire length 45 t ed to t p p for wh h 1t 5 fleslgned- I andthe sh ft isprovided with a pair of sub- V other j s and advantages 9 h stantially diametrically opposed ribs 2 and- VI1ti0nWi11fbe0me PP li ;f Qm t 3 that e atend from one end of the shaft to lowing description when taken in connection th {-.h s i l atte ti i di t- 11 V with thelacconipanying drawings. the factthat thesribs are twisted spirally,

so flnthe accompanying drawings wherein butrthe direction of the'twistfof the spiral jwris .reversed at equi-distant longitudinally I spaced point-s. As this construction has been V more fully disclosed and defined in my prior Patent #1,:391A00 a further description thereof in the present instance is not thought necessary. It is to be observed howeventhat the reversed ribsare'shorter.

A spindle 1 is slotted at its lower end for; engagement overtheupper end of theshaft 1 and a pin '5 extends throughsuitable.regise tering openings formed in the" slotted lower end of the spindle and the upper end of {the-- shaft for securing the spindle on said shaft.

A handle, comprising swooden; knob. 6 is.-.

formed with a central socket that extends upwardly from the bottom-of said knob and arrangedin this SOCkQiLIS the sleeve 7' for receiving the upper portionof the spindle 4..

A tit Sis associated with-this sleeve and the same is operable within-- an annular-- groove 9 formedin'the upper'end portion of the spmdle-tforthe purpose of preventing the displacement of the wooden the spindle.

Suitable ball bearings 10 are provided in, the upper closed end otth'e sleeve for cooperation with the upper endtof the spindle knob from .4 whereby said, handle is freeto rotate about the spindle; v 'The present invention further com'pre hends the provision of a valve engaging unit designated generally by the numeral 11, and

the same comprises a sleeve 12 that'is formed with longitudinal diametrically opposed slots 13, the lower portion of the sleeve being externally threaded as clearly illustrated in Figures 1 and 4 of the drawings.

The upper endofthis sleeve12 is detachably secured to the lower end of the twisted Figure 4 for the purpose of cooperating. with the ball 16, whereby when the ball is dis posed inthe smallest one of the communieating openings formed in the band15 a."

positive lock between thelower'end of the twisted shaft 1 and the sleeve12of the valve' engaging unit 11 is 'aiior'de'di Manifestly when the ball is in engagementwvith the larger of the communicating openings in the V band '155'the unit 11 may be readily-dis 7 V lowerend of the spirallyf twisted shaft. i Slidable withinthe sleeve 12 is the sub; stantially U-shaped memberl'i; the samebeengaged from the ing formed atv its upper endrwith the outward'ly extending ears 18 that are operable within the respective diametrically opposed guide slots 13 to determine the pres'sure in pounds. An expansiblecoil spring 19 is also A rotatable band 15. encircles arranged within the sleeve 12, and the same is disposed between the socket 14 and the crown portion ofthe el-shaped member 17 in the manner as'clearly illustrated in Figure. 1. The purpose of thisrcoil spring 19 is to normally exert a yieldingrpressure upon the U-shaped member 17 and alsoupon the shank 20, whose upper end portion-is slidable in thelower. end of the sleeve.

s The U-shaped member 17 has its base or crown portion resting upon the upper end of the shank and across pin 21 extends through the upper end of the shank and has its ends extending into the respective guide slots as also clearly shown in Figure 4.

The lower end :otthe shank; is forked and a pin 122-.eXte'nds transversely through the. outer end portions of :the-tureations 28 for-a. purpose to be presently described. I

Azblade2 lis pivotal'ly mounted-on the pin 22 between. the: furcations 23 ofzthe forked lower end'of theshank 20: and when the blade is disposed in the mannerias shownin Figures 1 and .7, the same is torbe used. inic'onjunction" with valve heads having slotteduppenfaces However; when the valve grinder is to be used in conjunction. with, valves provided with the soicalled pin holes, the blade 24:is swung on its pivotso as -to dispose the horizontally sliding arms: 25 and- 26, respec-" tively; that are carried b-y-the smaller end of the blade24 outwardlybt the-forked lower end'ofthe shank, as-shownin Figurefifi The smaller end of-th'e bladeis-formedwith a transverse slot toaceo'mmodate theinner opposed ends of the ends of the-horiZontall ydisposed arms 25 and =26, the outer ends of said arms being formed with laterally extending pointed dogs 27 that engage in the respectivepin holes formed inthe upper face ot'the valve that is tobe ground. The slid able arms 25 and 26 are actuated 1 by means of the curved-links 28 and 29, the'same being" disposed onopposite; sides ofth'e blade 24L} These links arefpivotally secured at; one'endi to the respectiveslidable arms 25 an'd26j'while the opposite ends of the links 'areoperativelyconnected together byineans of apinBO that ls operable within a longitudinally extending' slot 31 provided thereforthe larger "poradjusting nut 32 above the cylinderblock= there is provided a. tripod .crosshead washer 33. Thiswasher is maintainedimposition upon the nut ,32.-bymeans of a spring locking ring 3%. Thecylinder block; engagiiiglegs areshowna 3.5211161 three/Tot such legs are pro-- videdQ A ball bearing ilnitfl36is associated withl the pressure a 'dju'stinglnut 32 and the washer; 33 to permit the free-rotation of the nut andshaft; "with eiic'eptionfof the washer sleeve 12 and is adapted to engage in avslot 38 formed in one side'of the sleeve as clearly shown in Figure 4. This locking member is formed with anoutwardly projecting portion provided therefor in a knurled sleeve 41 that position by means of the spring finger 42.

The locking. member 37 is formed with an j oblong slot whereby said locking member maybe moved horizontally by pressing in wardly on the outwardly projecting portion 39 against the tension of the spring finger 42 so that the portion of the locking member sleeve will be moved'out of engagement therewith, and the outer end of the project- 1ng portion 39 Wlll be disposed in the vertical groove formed in the inner face of 0 theknurled sleeve 41. V r

Also the nut maybe turned to any desired position upon the sleeve 12 and by. releasing the pressure on the projecting end 39 of the locking member 37, the same will againenter secure the nut in its properly adjusted position against rotation. The sleeve 41 and nut 32 will rotate together as a unit.

Forming a salient part of the present ingrip designated generally by the numeral 43. The hand grip includes a sect1onal outer cas ing, the complementary sections of which are tively. A frame work also including detachably connected sections and designated generally by the numeral 46 is arranged Within the outer casingfor disposition" around the spirally twisted shaft l. A series of roller I niunication-with the notchfil A tube 62 surrounds the upper projecting bearing cages 47 are p'ivotally associatedwith the frame 46 as at 48, four of such cages being employed, and the same being arranged in pairs. Each pair of cages are operatively' connected together by means of a pivotallinlr connection designated at 49 with reference more particularlytoFigure 2. An anti-friction roller 50 is journaled for rotation in each cage and manifestly as thereare four cages,

"there will necessarily be four rollers. Onepairof these rollers engage one-side of the: g V v I in ng'aigement with the notch in the lower end twisted shaft 1 while the opposite pair enefl'ect an oscillatory movement ofthe spirally '39'that normallyextends' through a. slot 40 the slot 40 inthe knurled sleeve '41 and thus vention is the provision of the slidable hand designated by the numerals 44 and 45 respec gage the other side'ofthe shaft wherebyto 1 of the hand" grip 43 in the manner to be hereinafter more fully described.

The particular mannerin which the rollers I I are mounted in their respective cages is clearly shown in Figures 2 and 3'ofthe drawings.

The sections 44 and 45 ofthe outer casing plementary sections '44 and 45 of the outer casing are also provided with cooperating securing: elements54and'54 for maintain.- encircles the ad usting nut 32 and is held in ingthe same in locked or assembled relation as shown in the dotted lines in Figure2, and said last mentioned locking means is released tnrough the medium of the spring latch or a coupling 54. V. v

The frame that is disposed within'the outer casing is'locked against rotation with respe'ot tothe outer casingfthrough the me dium of pins 55that extend downwardly from the shaft 1 upon-the down stroke only or on the upstroke when the handle is turned upside down. i This clutch may be actuated. by V a clutchlever, not shown, that extends through the outer casing'for the purpose of rendering w e co l the upper ends of the complementarysectionsthe clutch inoperative, whereby the shaft will turn on both strokes; r I r "Witlr reference now'to Figures7, 8 and 9, there is shown an elongated knurled sleeve 58 through-which extends theshaft'59, the

same beinglonger than the sleeve; The up per end of the shaft 59 is formed withla socket 650 forreceiving thereduced lower endofthe spirally twisted shaft 1 and, this socket is notched as at 61 it being understood of course end of "the'shaft- 59 and this sleeve' is also formed with-a -slotthat registers with the" notch 61 and thro'ughiwhich slotv extends the tion 63 of'thespringfinger is held inan 1n' operative posi ion, and .fonthepurpose of clzing the inwardly projecting lportion 63 thatfthe .reduced 'lower end-of-the twisted. shaft 1 is also formed witha notch for comofthe twisted shaft l'whenthe same is dis-H posedjin th'e soclzet 60, I provide the slidingtube-62 over theispring-finger 64:. in the iman-v ner as more clearly illustratec in Figures;

, This inwardly extending portion 63 f the spring finger 64. provide an operative 'con- (nection between the lower endof the spirally twisted shaft 1 and the shaft 59.

A member, 66- iswoperatively. connected to the lower end of the shaft 59 that extends below the lower end of the sleeve '58 throughi the medium of auniversal joint'designated generaliyby the numeral 67 and this me1nber 66 is so formed at its lower end as'to, co-V operate with the socket formed in the upper end of the sleeve .12 ofthe valve engaging,

,unit 11in the same manner-as the lower end of the-spirally twisted shaft'rl'engages with, said socket. The unit shown in Figure 8 is only used for the purpose of grinding valves that are ordinarily inaccessible with the valve grinder shown in Figure 1 and Y frequently such valves are the ones located'in the last.c* linderof certaintv )GS of automo- 7 Cooperating with'the unit shown in Figure :8is an elongated. lever 68, thesame'being formed at-its upper endwith an enlarged twisted shaft' l will be disposed upwardly at an incline so that the same. can be, readily actuated to effectithe operation of 'the'shaft that is-operatively connected to'the valve engagingbladeQ h e The operation of my. improved valve grinder is thought to be readily obvious from the construction disclosed, and therefore further detailed description thereof 'isbelieved unnecessary. I p

It will thus be seen from the fore-going de= scription, that I have provided an improved valve grinder which willisave considerable time and labor in grinding valves of internal combustion'engines, and furthenio're by reason of the detachable units above described, valves that are ordinarily inaccessible can be readilyand easily reached so as I claim asnew and desire to-secure by-Leta ters Patent is z? i Ina valve grinder, a fork at its lower encha blade pivoted intermediate its ends in the forked lower end of I said shank, a valve slot, engaging element a ,shank formed with formed ;on oneend of the blade, the other end portion of the blade being provided with;

a transversevslot, a pair of ico-actingc-horiz ontally adpifstable armsslidably disposed at theirinner ones in said transverse slot, the outer ends of the arms being disposed latorallyto formpin-hcle engaging elements, a

pair ofcurveidglinks pivotally'connected at one end to 'thei outer end portions of the respective. arms, said curved links being disposedlon opposite sides of the. blades and connected together at their oppositeends, the blade being formed with along'itudinal slot to accommodate the. connectionbetween: the

adjacentends of the. curvedlinks, the valve slotiengaging. element of-said blade being disposed within theforked lower end of said shank when SttlClplIl'hOlQfiIlgt'lgll'lg elements t are inaise, and vice versa. y In testimony whereof I afiixmy signature.

JOHN, ORAWIEC.

to insure theipositiveand efiicientgrinding of such valves withmy improved tool.

\Vhile I have shown the preferredemhodiment of my invention, it is to beunde'rstood thatvarious changes in the size, shape and arrangementof parts may be resorted to c without departing from'the spirit of'the i'nvention and the scope of theappendedclaiml Having: thus described theinventi'on, what 

